Longman Dictionary of Contemporary English homepage

Date: 1200-1300
Language: Old North French
Origin: planke, from Latin planca, from plancus 'flat'

plank

 noun
     
Related topics: Construction
plank [countable]
1TBC a long narrow piece of wooden board, used especially for making structures to walk on:
a bridge made of planks
2 one of the main features or principles of an argument etc [↪ platform]
a five-plank campaign including raising the minimum wage

➔ walk the plank

at walk1 (13)

; ➔ as thick as two short planks

at thick1 (7)
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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